default or selected kernelversion does not have config value CONFIG_SERIAL_VR41XX_CONSOLE.
Result is shown for kernelversion 6.9.9

Enable NEC VR4100 series Serial Interface Unit console

configname: CONFIG_SERIAL_VR41XX_CONSOLE

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Enable NEC VR4100 series Serial Interface Unit console
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
If you have a NEC VR4100 series processor and you want to use
a console on a serial port, say Y. Otherwise, say N.